import sys
import os
import re
import fnmatch
__all__ = ['glob', 'iglob']

def glob(pathname):
    return list(iglob(pathname))



def iglob(pathname):
    if not has_magic(pathname):
        if os.path.lexists(pathname):
            yield pathname
        return 
    (dirname, basename,) = os.path.split(pathname)
    if not dirname:
        for name in glob1(os.curdir, basename):
            yield name

        return 
    if has_magic(dirname):
        dirs = iglob(dirname)
    else:
        dirs = [dirname]
    if has_magic(basename):
        glob_in_dir = glob1
    else:
        glob_in_dir = glob0
    for dirname in dirs:
        for name in glob_in_dir(dirname, basename):
            yield os.path.join(dirname, name)





def glob1(dirname, pattern):
    if not dirname:
        dirname = os.curdir
    if (isinstance(pattern, unicode) and (not isinstance(dirname, unicode))):
        dirname = unicode(dirname, (sys.getfilesystemencoding() or sys.getdefaultencoding()))
    try:
        names = os.listdir(dirname)
    except os.error:
        return []
    if (pattern[0] != '.'):
        names = filter(lambda x: (x[0] != '.'), names)
    return fnmatch.filter(names, pattern)



def glob0(dirname, basename):
    if (basename == ''):
        if os.path.isdir(dirname):
            return [basename]
        elif os.path.lexists(os.path.join(dirname, basename)):
            return [basename]
        return []


magic_check = re.compile('[*?[]')

def has_magic(s):
    return (magic_check.search(s) is not None)



